Question

On a trip to the Moon you swing a pail of moon-dust in a vertical circle which has a radius of .850 m. At the top of the circle, the tension in the rope on which the pail is swinging exerts a force equal to twice the force of the Moon's gravity on the pail. If the speed of the pail at the top of the loop is 2.03 m/s, then the acceleration due to gravity on the Moon is?